I really feel for Betty. She was obviously infantilized by her parents and taught that if she was the most beautiful girl and didn't "get stout" that prince charming would come along and adore her and she'd have a wonderful life. Her own father admitted he never pushed her or encouraged her that she could accomplish anything and that she paid the price by marrying Don. Betty
has paid the price. She's beautiful, she gave him children; she plays the perfect hostess and wife when he has to impress clients, yet he constantly cheats on her, lies to her, keeps things in locked drawers and he doesn't love her. In her mind, she's done everything she was supposed to do--why isn't she loved? Betty has no idea how to be an adult. No one taught her. She's a woman who would have been much happier as a buyer living in uptown Manhattan working for a high scale department store, or as an actress or model traveling the world. Betty was sold on the ideal that life in the suburbs, married to a successful man, with 2.4 children was the goal she should have. Betty shouldn't have had children (or maybe waited until she'd done everything else she wanted in her life to have
a child) or gotten married and moved to the quiet suburbs. Had she been born in 1952 instead of 1932, she'd have grown up learning a different message, that women had options. There's nothing wrong with living in the suburbs and having lots of kids if it's what you
really want--but it isn't what Betty really wants. Ironically, the only time Don seems attracted to her is when she steps out of the suburban mom role (Rome and her brief modeling stint during season one).
Unfortunately, Betty's problems are compounded by the fact that Don is a really lousy husband. He wanted the perfect image of a wife, one that a poor whore child from backwoods Pennsylvania could never get in his wildest dreams. Don is such a wonderful provider, though, that Betty is supposed to be satisfied by the standards of the time. What have you got to complain about Mrs. Draper? Don's so charming and he earns such a good living. Sure he's a complete bastard, but he's a nice man a good catch, right? Right.
Couldn't Betty have her marriage annulled if she ever found out the truth? Don Draper isn't Don. It's not a legal marriage. It can't be.
I think she also wanted to get a man worked up and then tell him "no." She wants control just as much as Don, but she never gets the opportunity.
Bingo. Betty has no real power. It's what she wants, but she doesn't think she can survive as a single mom. Realistically, Betty couldn't handle three kids on her own and she's scene how divorced women are viewed a la Helen Bishop. Don earns the money, he keeps her in the dark, he runs off to California to lay 19 year olds whenever he wants, and so on and so forth. Now Betty's further tied to him with infant Eugene. These two wouldn't be together if she hadn't gotten pregnant thanks to their one romp on the floor at her father's house. She took control that one time because she felt a physical need and ended up pregnant by Don a third time. Abortion isn't legal.